NDT – Phils., Inspection Services Corporation
NON DESTRUCTIVE TESTING
Magnetic Flux Leakage Testing (MFLT)
Magnetic Flux Leakage (MFL) is a widely used non-destructive testing (NDT) method for inspecting the bottoms of storage tanks, particularly in the petrochemical and oil industries. MFL works by magnetizing the steel in the tank bottom using a powerful magnet. When there are defects such as corrosion, pitting, or cracks in the steel, the magnetic field leaks from the steel into the surrounding air. This leakage is detected by sensors in the MFL equipment, which create a map of the tank bottom showing areas of metal loss or damage.
MFL is particularly effective for tank bottom inspection because it can quickly cover large areas and provide a detailed assessment of the tank's condition without the need for the tank to be emptied or taken out of service. This method helps ensure the structural integrity and safety of storage tanks, preventing leaks and potential environmental hazards. Regular MFL inspections enable early detection of issues, allowing for timely maintenance and repair, which ultimately extends the lifespan of the tanks and reduces operational risks.